The Greenland and Antarctic ice sheets are these giant domes of ice that preserve climate records, very much like tree rings. Snow is added to the top, turns into ice, and ice core scientist can drill holes through the ice sheets and pull out a core and examine, not only the ice, but also bubbles of ancient air that are trapped in the ice.
Greenland dan lapisan es Antartika adalah kubah es raksasa sangat banyak seperti lingkaran pohon. dan ilmuwan inti es dapat menelusuri lubang melalui lapisan es tetapi juga gelembung udara kuno yang terperangkap di dalam es.